Home / 3,381.78-4,666.83-1,889.70

Finding the Fourth Proportional to 3,381.78, 4,666.83 and 1,889.70

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Solution

The fourth proportional to 3,381.78, 4,666.83 and 1,889.70 is: 2,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.78 : 4,666.83 = 1,889.70 : x
  2. Step 2: Convert to fraction form
    3,381.78/4,666.83 = 1,889.70/x
  3. Step 3: Cross multiply
    3,381.78x = 4,666.83 × 1,889.70
  4. Step 4: Simplify right side
    3,381.78x = 8,818,908.65
  5. Step 5: Solve for x
    x = 8,818,908.65/3,381.78
  6. Step 6: Final answer
    x = 2,607.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.